Add me to the list of Sigma owners who's not completely (or even close to completely!) sure what he has.

For starters, it's got the "Sigma Guitars, Est. 1970" headstock. What it DOESN'T have is Sigma label inside...though it DID have the "Picador" label that you hear about on guitars that weren't of first quality.

To that end, there's a lone number---2----on the inside where the Sigma label might have been; I had to peel off the "Picador" label to find that (was hoping for a little more than a single digit). The "2" almost looks hand-written, but I imagine it was done by stencil.

I've heard and read that "second quality" Martin-related guitars were often blemished or victimized by poor glue jobs. The latter is certainly true in my case; there's a nasty splash of glue below the sound hole which is not what you'd expect from any Martin product. It's led me to believe this was, indeed, a second-quality box.

Anyone got an intelligent guess on this? The previous owner thought it was a D-18 (based on shape and size) but I'm not quite convinced. If you know a Martin or Sigma expert with knowledge, I'm all ears.

Thanks!